In this April 21, 2010 file aerial photo, the Deepwater Horizon oil rig burns in the Gulf of Mexico more than 50 miles southeast of Venice, La. A lawyer working for the court-appointed administrator to review claims as part of the multibillion-dollar settlement over BP's Gulf oil spill has been accused of receiving payments from a law firm representing a claimant, allegations that were discussed in a closed-door meeting Thursday, June 20, 2013, with a federal judge overseeing the case, a BP official with direct knowledge of the situation told The Associated Press. (AP Photo/Gerald Herbert, File)

NEW ORLEANS (AP) — BP is calling for an independent investigation into a lawyer working for the administrator reviewing claims arising from the Gulf oil spill who has been accused of collecting portions of settlement payments from a New Orleans law firm to which he had once referred claims.

The London-based oil giant issued a statement Friday that said only a "comprehensive and independent investigation will ensure the integrity of the claims process."

A BP PLC official who has reviewed a report outlining the allegations, said claims administrator Patrick Juneau delivered a copy of the report to U.S. District Judge Carl Barbier during a meeting in his chambers Thursday. Lawyers for BP and the team of private attorneys who brokered the multibillion-dollar settlement also attended the meeting. The BP official spoke on condition of anonymity because the report hasn't been made public.

The staff lawyer, Lionel H. Sutton III, acknowledged in an email late Thursday that he has been told he was suspended "pending an investigation of an anonymous allegation against me."

"I have not been made aware of the substance of the allegation or the status of the investigation," Sutton wrote. "Once this is resolved, I would be happy to discuss it all with you."

The BP official said the report indicates that Juneau's security head, David Welker, also notified the FBI's New Orleans division about the lawyer's alleged misconduct. Welker until recently was the special agent in charge of the FBI office in New Orleans.

An FBI spokeswoman in New Orleans declined to comment Thursday.

According to the BP official, Juneau told the judge that he had suspended the lawyer and was weighing further disciplinary action. Neither Juneau nor his spokesman responded to calls and emails on Thursday night.

The report says Welker received a complaint that the staff attorney had referred claims to a New Orleans law firm in exchange for portions of subsequent settlement payments, the BP official said. The lawyer allegedly filed those claims before he went to work for Juneau.

The claims at issue were filed on behalf of a single party and involve hundreds of thousands of dollars, the BP official said.

BP PLC has sued to block what could be billions of dollars in settlement payouts to businesses over the spill. The company has accused Juneau of trying to rewrite the terms of the deal and asserts that he has made decisions that expose the company to fictitious losses that were never contemplated in the settlement.

Judge Barbier, who is overseeing the massive settlement, appointed Juneau last year and has upheld his decisions for calculating payments. BP has appealed, and the 5th U.S. Circuit Court of Appeals is scheduled to hear the case in July.

The spill began in April 2010 after the BP-leased drilling rig Deepwater Horizon exploded off the Louisiana coast, killing 11 workers. Roughly 200 million gallons of crude oil were released from the Macondo well a mile under the Gulf surface. Marshes, fisheries and beaches from Louisiana to Florida were fouled by the oil until a cap was placed over the blown-out well in July 2010.

BP set up a compensation fund for individuals and businesses affected by the spill and committed $20 billion. The claims fund initially was handled by lawyer Kenneth Feinberg but Juneau took over the processing of claims after the settlement was reached last year.

It wasn't immediately known how many lawyers work for Juneau, but his office announced in May that it has determined more than $3 billion in claims are eligible for payment through the settlement agreement. More than 162,000 claims were filed and more than $2 billion had been paid to claimants as of May 6.

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